25. According to the passage, in all HDR recovery systems fluid will be necessary in order to allow
(A) sufficient permeability
(B) artificial stimulation
(C) drilling of holes
(D) construction of reservoirs
(E) transfer of heat
26. According to the passage, if the average geothermal gradient in an area is 22℃ per kilometer of depth, which of the following can be reliably predicted?
Ⅰ.The temperature at the base of a 10-kilometer well will be sufficient for the production of electricity.
Ⅱ Drilling of wells deeper than 10 kilometers will be economically feasible.
Ⅲ Insufficient water is present to produce eruptive phenomena
(A) Ⅰ only
(B) Ⅱ only
(C) Ⅰ and Ⅱ only
(D) Ⅱ and Ⅲ only
(E) Ⅰ.Ⅱ. and Ⅲ
27. Which of the following would be the most appropriate title for the passage?
(A) Energy from Waters Sources: The Feasibility of Commercial System
(B) Geothermal Energy Retrieval: Volcanic Activity and Hot Dry Rocks
(C) Energy Underground: Geothermal Sources Give Way to Fossil Fuels
(D) Tappable Energy for America's Future: Hot Dry Rocks
(E) High Geothermal Gradients in the United States: Myth or Reality?
28. INCENTIVE:
(A) agreement
(B) doubt
(C) deterrent
(D) complement
(E) negotiation
29. COMPASSION:
(A) indifference
(B) chastity
(C) sobriety
(D) timidity
(E) distress
30. AGGRAVATE:
(A) disperse
(B) alleviate
(C) heed
(D) render bland
(E) make equal
31. IMPLAUSIBLE:
(A) admirable
(B) believable
(C) controllable
(D) extremely practical
(E) carefully considered
32. ANTIPATHY:
(A) decorum
(B) benevolence
(C) proximity
(D) free will
(E) high spirits
33. EXTRICATE:
(A) complicate
(B) absorb
(C) induct
(D) entitle
(E) entangle
34. MORDANT:
(A) uninteresting
(B) supine
(C) genial
(D) given to silence
(E) highly emphatic
35. GLUT:
(A) dearth
(B) limit
(C) void
(D) supply
(E) drain
36. DISCRETE:
(A) continuous
(B) magnified
(C) tenuous
(D) contradictory
(E) ambivalent
责任编辑：sealion1986
